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Study of rare b decays with the DELPHI detector at LEP
Authors :
Adam, W Adye, T Agasi, E Ajinenko, I Aleksan, R and Alekseev, GD Alemany, R Allport, PP Almehed, S Amaldi, U and Amato, S Andreazza, A Andrieux, ML Antilogus, P and Apel, WD Arnoud, Y Asman, B Augustin, JE Augustinus, A and Baillon, P Bambade, P Barao, F Barate, R Barbi, M and Bardin, DY Baroncelli, A Barring, O Barrio, JA and Bartl, W Bates, MJ Battaglia, M Baubillier, M Baudot, J and Becks, KH Begalli, M Beilliere, P Belokopytov, Y and Benvenuti, AC Berggren, M Bertini, D Bertrand, D and Bianchi, F Bigi, M Bilenky, MS Billoir, P Bloch, D and Blume, M Bolognese, T Bonesini, M Bonivento, W Booth, PSL Borisov, G Bosio, C Botner, O Boudinov, E and Bouquet, B Bourdarios, C Bowcock, TJV Bozzo, M and Branchini, P Brand, KD Brenke, T Brenner, RA Bricman, C and Brown, RCA Bruckman, P Brunel, JM Bugge, L Buran, T and Burgsmueller, T Buschmann, P Buys, A Cabrera, S and Caccia, M Calvi, M Rozas, AJC Camporesi, T Canale, V and Canepa, M Cankocak, K Cao, F Carena, F Carroll, L and Caso, C Gimenez, MVC Cattai, A Cavallo, FR Chabaud, V and Charpentier, P Chaussard, L Chauveau, J Checchia, P and Chelkov, GA Chen, M Chierici, R Chliapnikov, P Chochula, P Chorowicz, V Chudoba, J Cindro, V Collins, P and Contreras, JL Contri, R Cortina, E Cosme, G Cossutti, F and Crawley, HB Crennell, D Crosetti, G Maestro, JC and Czellar, S DahlJensen, E Dahm, J Dalmagne, B Dam, M and Damgaard, G Dauncey, PD Davenport, M DaSilva, W Defoix, C Deghorain, A DellaRicca, G Delpierre, P Demaria, N and DeAngelis, A DeBoer, W DeBrabandere, S DeClercq, C and DeLaVaissiere, C DeLotto, B DeMin, A DePaula, L and DeSaintJean, C Dijkstra, H DiCiaccio, L Djama, F and Dolbeau, J Donszelmann, M Doroba, K Dracos, M Drees, J and Drees, KA Dris, M Durand, JD Edsall, D Ehret, R and Eigen, G Ekelof, T Ekspong, G Elsing, M Engel, JP and Erzen, B Santo, ME Falk, E Fassouliotis, D Feindt, M and Fenyuk, A Ferrer, A Fichet, S Filippas, TA Firestone, A and Fischer, PA Foeth, H Fokitis, E Fontanelli, F and Formenti, F Franek, B Frenkiel, P Fries, DC Frodesen, AG and Fruhwirth, R FuldaQuenzer, F Fuster, J Galloni, A and Gamba, D Gandelman, M Garcia, C Garcia, J Gasper, C and Gasparini, U Gavillet, P Gazis, EN Gele, D Gerber, JP and Gibbs, M Gokieli, R Golob, B Gopal, G Gorn, L and Gorski, M Gouz, Y Gracco, V Graziani, E Grosdidier, G and Grzelak, K Gumenyuk, S Gunnarsson, P Gunther, M Guy, J Hahn, F Hann, S Hajduk, Z Hallgren, A Hamacher, K and Hao, W Harris, FJ Hedberg, V Henriques, R Hernandez, JJ Herquet, P Herr, H Hessing, TL Higon, E Hilke, HJ and Hill, TS Holmgren, SO Holt, PJ Holthuizen, D and Hoorelbeke, S Houlden, M Hrubec, J Huet, K Hultqvist, K and Jackson, JN Jacobsson, R Jalocha, P Janik, R and Jarlskog, C Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C Juillot, P Kaiser, M Kapusta, F Karafasoulis, K Karlsson, M Karvelas, E and Katsanevas, S Katsoufis, EC Keranen, R Khokhlov, Y and Khomenko, BA Khovanski, NN King, B Kjaer, NJ Klein, H and Klovning, A Kluit, P Koene, B Kokkinias, P and Koratzinos, M Korcyl, K Kourkoumelis, C Kouznetsov, O and Kramer, PH Krammer, M Kreuter, C Kronkvist, I Krumstein, Z Krupinski, W Kubinec, P Kucewicz, W Kurvinen, K and Lacasta, C Laktineh, I Lamblot, S Lamsa, JW Lanceri, L and Lane, DW Langefeld, P Last, I Laugier, JP and Lauhakangas, R Leder, G Ledroit, F Lefebure, V Legan, CK and Leitner, R Lemoigne, Y Lemonne, J Lenzen, G and Lepeltier, V Lesiak, T Libby, J Liko, D Lidner, R and Lipniacka, A Lippi, I Loerstad, B Loken, JG Lopez, JM and Loukas, D Lutz, P Lyons, L MacNaughton, J Maehlum, G and Maio, A Malychev, V Marco, J Marco, R Marechal, B and Margoni, M Marin, JC Mariotti, C Markou, A Maron, T and MartinezRivero, C MartinezVidal, F Garcia, SMI Masik, J and Matorras, F Matteuzzi, C Matthiae, G Mazzucato, M and McCubbin, M McKay, R McNulty, R Medbo, J Merk, M and Meroni, C Meyer, S Meyer, WT Miagkov, A Michelotto, M and Migliore, E Mirabito, L Mitaroff, WA Mjoernmark, U and Moa, T Moeller, R Moenig, K Monge, MR Morettini, P and Mueller, H Mundim, LM Murray, WJ Muryn, B Myatt, G and Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P and Neumann, W Neumeister, N Nicolaidou, R Nielsen, BS and Nieuwenhuizen, M Nikolaenko, V Niss, P Nomerotski, A and Normand, A Novak, M OberschulteBeckman, W Obraztsov, V and Olshevski, AG Onofre, A Orava, R Osterberg, K Ouraou, A and Paganini, P Paganoni, M Pages, P Palka, H and Papadopoulou, TD Papageorgiou, K Pape, L Parkes, C and Parodi, F Passeri, A Pegoraro, M Peralta, L Pernegger, H and Pernicka, M Perrotta, A Petridou, C Petrolini, A and Petrovyck, M Phillips, HT Piana, G Pierre, F Pimenta, M and Pindo, M Plaszczynski, S Podobrin, O Pol, ME Polok, G Poropat, P Pozdniakov, V Prest, M Privitera, P and Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S Rahmani, H and Rames, J Ratoff, PN Read, AL Reale, M Rebecchi, P and Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Richardson, J Ridky, J Rinaudo, G and Ripp, L Romero, A Roncagliolo, I Ronchese, P Roos, L and Rosenberg, EI Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W RuhlmannKleider, V Ruiz, A Rybicki, K Saarikko, H and Sacquin, Y Sadovsky, A Sahr, O Sajot, G Salt, J and Sanchez, J Sannino, M Schimmelpfennig, M Schneider, H and Schwickerath, U Schyns, MAE Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM Seitz, A Sekulin, R Shellard, RC Siccama, I Siegrist, P Simonetti, S Simonetto, F and Sisakian, AN Sitar, B Skaali, TB Smadja, G Smirnov, N and Smirnova, O Smith, GR Sokolov, A Solovianov, O and Sosnowski, R SouzaSantos, D Spassov, T Spiriti, E and Sponholz, P Squarcia, S Stanescu, C Stapnes, S and Stavitski, I Stevenson, K Stichelbaut, F Stocchi, A and Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M and Tabarelli, T Tavernet, JP Tchikilev, O Thomas, J and Tilquin, A Timmermans, J Tkatchev, LG Todorov, T and Todorova, S Toet, DZ Tomaradze, A Tome, B Tonazzo, A and Tortora, L Transtromer, G Treille, D Trischuk, W and Tristram, G Trombini, A Troncon, C Tsirou, A Turluer, ML and Tyapkin, LA Tyndel, M Tzamarias, S Ueberschaer, B and Ullaland, O Uvarov, V Valenti, G Vallazza, E and VanderVelde, C VanApeldoorn, GW VanDam, P VanDoninck, WK and VanEldik, J Vassilopoulos, N Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS Vilanova, D and Vincent, P Vitale, L Vlasov, E Vodopyanov, AS Vrba, V and Wahlen, H Walck, C Waldner, F Weierstall, M and Weilhammer, P Weiser, C Wetherell, AM Wicke, D Wickens, JH Wielers, M Wilkinson, GR Williams, WSC Winter, M and Witek, M Woschnagg, K Yip, K Yushchenko, O Zach, F and Zaitsev, A Zalewska, A Zalewski, P Zavrtanik, D and Zevgolatakos, E Zimin, NI Zito, M Zontar, D Zucchelli, GC Zumerle, G
Publication Year :
1996
Abstract
Rare decays of beauty particles were studied in several charmless modes using the data collected with the DELPHI detector at LEP from 1991 to 1994. These decays are mediated by both tree level b–>u and one-loop penguin b–>s, d transitions. Evidence for charmless B decays was obtained in two body hadronic modes. The branching ratios of B-d,s(0) to pi(+)pi(-) or K(+)pi(-) and B-u(-) to rho(0) pi(-) or K(*0)pi(-) were found to be (2.8(-1.0)(+1.5) +/- 0.2) x 10(-5) and (1.7(-0.8)(+1.2) +/- 0.2) x 10(-4) respectively. The fraction of these decays with a charged kaon in the final state that is not from the spectator s quark, was measured to be 0.58 +/- 0.18. Upper limits were set at 90% confidence level on the branching ratios for three and four body charmless hadronic decays in the range of (1-3) x 10(-4), for inclusive radiative b–>s gamma decays at 5.4 x 10(-4), for inclusive radiative b–>s gamma decays at 5.4 x 10(-4), for the exclusive radiative decays B-d(0)–>K*(892)(0) gamma and B-s(0)–>phi(1020)gamma at 2.1 x 10(-4) and 7.0 x 10(-4) respectively, and for dineutrino decays, b–>, in the exclusive channels B-d(0)–>K*(892)(0) nu and B-2(0)–>phi(1020) at 1.0x10(-3) respectively. The limits on dineutrino decays constrain theories with a new U(1) gauge boson coupling predominantly to the third family of fermions.
Details
Language :
English
Database :
OpenAIRE
Accession number :
edsair.od......2127..f28b6b9fa889162840ec73605bee5c1d